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Re: [PATCH] calibrate_tsc(): use the Stall() EFI boot service on GRUB_MA
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From: |
Vitaly Kuznetsov |
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Subject: |
Re: [PATCH] calibrate_tsc(): use the Stall() EFI boot service on GRUB_MACHINE_EFI |
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Date: |
Mon, 30 Nov 2015 17:31:00 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Andrei Borzenkov <address@hidden> writes:
> 26.11.2014 11:59, Laszlo Ersek пишет:
>> HyperV Gen2 virtual machines have no PIT; guest code should rely on UEFI
>> services instead.
>>
>
> Could you retest with current master? It now supports multiple methods
> to calibrate TSC and should avoid PIT on UEFI systems.
Unfortunately, current master (grub-2.02-beta2-561-g346a494) still
doesn't work for me, timer keeps running like crazy on Gen2 Hyper-V VMs.
--
Vitaly